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I`m considering FCM to push message and have a fairly large user base, 1-2 million users using in a week. I have the following queries on the free FCM usage
The number of calls to firebase per day/week/month, is it unlimited in the free FCM usage?
Is there a limit on the concurrent calls I can make to my FCM server account?
Can the data payload exceed 4kb?
Is there a limit on the device groups that can be created?
Firebase Cloud Messaging is indeed free and unlimited. There is no documented limit on the number of calls you can make, although there are measures to protect against abuse.
Not that I know of.
Nope, the maximum message size is 4k.
There is no limit on the number of device groups that can be created (at least as far as I know).
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If I were to activate Pub/Sub as a trigger once a day everyday using Cloud Scheduler, is it safe to assume that the cost for this is zero (no charges)?
To elaborate on the bigger picture, I am trying to use Pub/Sub as the trigger to get Cloud Functions to issue a query to BigQuery to send daily notifications to Slack.
Wanted to get an idea of how much this entire process would cost, and the costs of Cloud Functions and BigQuery were pretty straightforward, but I am having trouble understanding the pricing plan of Pub/Sub.
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Currently cloud firestore spark or free plan provides 20k writes/day, 50k reads/day, 20k deletes/day.
What will happen if my spark plan of cloud firestore exceeds it's limit and I don't upgrade my plan?
Will my apps start using firestore offline database or will my account/project get disabled?
Any read/write/delete operation will return a 'resource-exhausted' error if you have utilized your free quota for the day. You'll have to wait until it resets.
Quotas are applied daily and reset around midnight Pacific time.
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I have a lot of general networking knowledge, but I am unsure about some of the specifics. This topic was lead to me through a question within my statistics class discussing discrete or continuous variables.
The example used the time to download a file from a website.
I know that the maximum speed that a file is capable of being transferred is directly related to the speed of the connection, the protocol used, network conditions, and can be slightly enhanced (or degraded) by the use of compression. Regardless, the fastest possible speed can be calculated for any given connection, but I have never found any information detailing what the minimum sustained transfer rate could be.
Is it possible to go below 1bps?
The minimum for any kind of transfer is 0 unit/second.
If someone temporarily unplugs your router from the internet, during the seconds the router is unplugged you will have 0 bps. If the disconnection is short the connection could recover, but during the disconnect you will have no transfering of data.
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Obviously the difference is that one can and one cannot access Netflix. But how does Netflix ban VPNs while not catching VPNs designed specifically to access Netflix?
The main difference is the question of whether Netflix knows about them yet or not.
In time, the VPNs which can access Netflix today will likely end up being blocked by from accessing the service when Netflix's analysis of incoming connections reveals IP addresses which could belong to VPNs used to circumvent their restrictions.
It is possible that some operators of VPN services may make use of IP addresses which are changed periodically to make detection less likely and this is how they may go for an extended period of time without being blocked.
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Suppose my Skype integration wants to filter notifications for a user to messages that contain the string "server down". Is this possible?
Per default Skype for Business (=SfB) can only block URL or attachments as written here. Maybe there exist an 3rd party application which can do that, but I do not think so. Reason: The problem here is that SfB can perform peer2peer connections (see more here). That means if you and your workmade are in the same network and no firewall restricts you both and you both perform a chat together, the chat is done between both of you (without a real server connection; for more infos see the official documentation inside the 2nd link). So a 3rd party software (which might sitting on the server) will not capture that kind of information. So what you might need is a client software on every PC. But what about the mobile clients then? So I do not think that such a software exists or would be possible to build.